Novel method for improving catalpa bungei cuttage propagation efficiency

A technology of cutting propagation and a new method, which is applied in the field of catalpa seedling breeding, can solve the problems of not being able to guarantee the shape of the progeny of excellent strains, limited seed production by sowing and propagation, and high cost of tissue culture, so as to ensure that the shape of the progeny remains unchanged , Improving the efficiency of catalpa cutting propagation and reducing the cost of propagation

Inactive Publication Date: 2016-07-20
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
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Problems solved by technology

However, there are still many deficiencies in today's catalpa seedling breeding technology, which are mainly manifested in the following aspects: 1) The survival rate of cuttings is very low regardless of hard branches or young branches, and the best effect in existing reports is only 50%; %; 2) Seed reproduction is limited by seed yield, and the shape of progeny of good strains cannot be guaranteed; 3) Grafting is prone to rhizosphere nematode damage; 4) Tissue culture is expensive and the technology is complicated and cumbersome

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A new method for improving catalpa cutting propagation efficiency, comprising the following steps:

[0022] 1) Establishment of ear-picking nursery: Choose land with flat land, good irrigation and drainage, fertile soil, sandy loam soil with good drainage is better. The retractable movable shade canopy is erected according to 4m×6m, the height is about 2.5m, and the shading rate is required to reach 95%. Apply farmyard manure or organic fertilizer as base fertilizer at an amount of 4000kg / mu, deep plow to make ridges with a width of 1.7m, and dig drainage ditches between the ridges with a width of 0.3m and a depth of 0.4m. The female parent is two-year-old seedlings of catalpa (8611), which are planted in late autumn or early spring, with a row spacing of 1m×1m, that is, two rows per ridge, and a spacing of 1m. After planting, cut off the stem at a distance of 30cm from the ground, so as to promote more side branches.

[0023] 2) Preparation of the cutting seedbed: th...

Embodiment 2

[0030] Adopt the method of embodiment 1, from March, 2014 to July, 2015, carry out the field experiment at the Baima base of Nanjing Forestry University, test material is two kinds of catalpa 8611 and common catalpa, each kind cuttage 1000 respectively with embodiment 1 Methods The cuttings were treated, and 1000 ordinary hard branch cuttings and twig cuttings without shading treatment were selected as controls. The experimental data for two consecutive years showed that: the experimental data of twig cuttings without shading The survival rate is more than 20%, and the survival rate of the cutting experiment using common hard branch cuttings is only about 5%, but the survival rate of the catalpa cuttings treated by this method is 92%, 90%, 85%, 87%, respectively. %, yes, the survival rate of catalpa cuttings has been greatly improved.

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Abstract

The invention discloses a novel method for improving catalpa bungei cuttage propagation efficiency.The method includes the first step of construction of a cutting orchard, the second step of preparation of a cuttage seedbed, the third step of preparation of a cuttage matrix, the fourth step of cultivation and harvesting of cuttings, the fifth step of cuttage, the sixth step of daily management after cuttage, and the seventh step of seedling hardening and transplanting.According to the transpiration and rooting rules of plants, tender branches low in lignification degree are obtained in a shading mode, cuttings are subjected to shading treatment through a shading method, the catalpa bungei cuttage survival rate is greatly increased and as high as 92%, inconvenience caused by catalpa bungei seedling propagation by means of tissue culture, grafting and other technologies is overcome, nursery cultivation time is greatly shortened, operation is easy, and the method is convenient to control and good in practicality.

Description

technical field [0001] The invention belongs to the technical field of catalpa seedling breeding, and in particular relates to a new method for improving the cutting propagation efficiency of catalpa. Background technique [0002] Catalpa ( Catalpa bungei ) is a deciduous tree of the genus Catalpa in the Bignoniaceae family. It is native to my country and is mainly distributed in the Yellow River and Yangtze River basins. Catalpa has been planted on a large scale in the Han Dynasty, and it has important application value in preventing soil erosion, protecting farmland, building timber forests, garden viewing, and road greening. With the continuous advancement of my country's ecological city construction and the requirements of industrial and economic development, the demand for fine varieties of Catalpa will continue to expand. However, there are still many deficiencies in today's catalpa seedling breeding technology, which are mainly manifested in the following aspects: 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00
CPCA01G22/00
Inventor 王良桂岳远征杨秀莲施婷婷何岭丁文杰王晰张莹婷
Owner NANJING FORESTRY UNIV
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